package com.mmall.service.impl;

import com.mmall.common.Const;
import com.mmall.common.ServerResponse;
import com.mmall.common.TokenCache;
import com.mmall.dao.UserMapper;
import com.mmall.pojo.User;
import com.mmall.service.IUserService;
import com.mmall.util.MD5Util;
import org.apache.commons.lang3.StringUtils;
import org.apache.ibatis.javassist.bytecode.annotation.IntegerMemberValue;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.UUID;

/**
 * @Author Jormin
 * @Date 2017/5/11.
 */
@Service("iUserService")
public class UserServiceImpl implements IUserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public ServerResponse<User> login(String username, String password) {
        int resultCount= userMapper.checkUsername(username);
        if(resultCount == 0){
            return ServerResponse.createByErrorMessage("用户名不存在");
        }

        String md5Password = MD5Util.MD5EncodeUtf8(password);
        User user=userMapper.selectLogin(username,md5Password);
        if(user == null){
            return ServerResponse.createByErrorMessage("密码错误");
        }

        user.setPassword(StringUtils.EMPTY);
        return ServerResponse.createBySuccess("登陆成功",user);
    }

    @Override
    public ServerResponse<String> register(User user) {
        ServerResponse validResponse=this.checkValid(user.getUsername(),Const.USERNAME);
        if (!validResponse.isSuccess()){
            return validResponse;
        }
        validResponse=this.checkValid(user.getEmail(),Const.EMAIL);
        if(!validResponse.isSuccess()){
            return validResponse;
        }

        user.setRole(Const.Role.ROLE_CUSTOMER);
        user.setPassword(MD5Util.MD5EncodeUtf8(user.getPassword()));

        int resultCount=userMapper.insert(user);
        if (resultCount==0){
            return ServerResponse.createByErrorMessage("注册失败");
        }
        return ServerResponse.createByErrorMessage("注册成功");
    }

    @Override
    public ServerResponse<String> checkValid(String str ,String type){
        if(org.apache.commons.lang3.StringUtils.isNotBlank(type)){
            if(Const.USERNAME.equals(type)){
                int resultCount=userMapper.checkUsername(str);
                if (resultCount>0){
                    return ServerResponse.createByErrorMessage("用户名已存在");
                }
            }
            if(Const.EMAIL.equals(type)){
                int resultCount = userMapper.checkEmail(str);
                if (resultCount > 0) {
                    return ServerResponse.createByErrorMessage("邮箱已存在");
                }
            }
        }else{
            return ServerResponse.createByErrorMessage("参数错误");
        }
        return ServerResponse.createBySuccessMessage("校验成功");
    }

    @Override
    public ServerResponse selectQuestion(String username){
        ServerResponse validResponse = this.checkValid(username,Const.USERNAME);
        if (validResponse.isSuccess()){
            return ServerResponse.createByErrorMessage("用户不存在");
        }
        String question=userMapper.slectQuestionByUsername(username);
        if (org.apache.commons.lang3.StringUtils.isNotBlank(question)){
            return ServerResponse.createBySuccess(question);
        }
        return ServerResponse.createByErrorMessage("找回密码的问题是空的");
    }

    @Override
    public ServerResponse<String> checkAnswer(String username,String question, String answer){
        int resultCount = userMapper.checkAnswer(username,question,answer);
        if (resultCount>0){
            String forgetToken= UUID.randomUUID().toString();
            TokenCache.setKey(TokenCache.TOKEN_PREFIX + username,forgetToken);
            return ServerResponse.createBySuccess(forgetToken);
        }
        return ServerResponse.createByErrorMessage("答案错误");
    }

    @Override
    public ServerResponse<String> forgetResetPassword(String username, String passwordNew,String forgetToken){
        if (org.apache.commons.lang3.StringUtils.isBlank(forgetToken)){
            return ServerResponse.createByErrorMessage("参数错误,token需要传递");
        }
        ServerResponse validResponse = this.checkValid(username,Const.USERNAME);
        if (validResponse.isSuccess()){
            return ServerResponse.createByErrorMessage("用户不存在");
        }
        String token=TokenCache.getKey(TokenCache.TOKEN_PREFIX + username);
        if (org.apache.commons.lang3.StringUtils.isBlank(token)){
            return ServerResponse.createByErrorMessage("token无效或过期");
        }
        if (org.apache.commons.lang3.StringUtils.equals(forgetToken,token)){
            String md5Password = MD5Util.MD5EncodeUtf8(passwordNew);
            int rowCount = userMapper.updatePasswordByUsername(username,md5Password);
            if(rowCount>0){
                return ServerResponse.createBySuccessMessage("修改密码成功");
            }
        }else {
            return ServerResponse.createByErrorMessage("token错误,请重新获取重置密码的token");
        }
        return ServerResponse.createByErrorMessage("修改密码失败");
    }

    @Override
    public ServerResponse<String> resetPassword(String passwordOld, String passwordNew, User user){
        String md5passwordOld=MD5Util.MD5EncodeUtf8(passwordOld);
        int resultCount = userMapper.checkPassword(md5passwordOld,user.getId());
        if (resultCount == 0){
            return ServerResponse.createByErrorMessage("旧密码错误");
        }
        String md5passwordNew=MD5Util.MD5EncodeUtf8(passwordNew);
        user.setPassword(md5passwordNew);
        int updateCount = userMapper.updateByPrimaryKey(user);
        if (updateCount > 0){
            return ServerResponse.createBySuccessMessage("密码更新成功");
        }
        return ServerResponse.createByErrorMessage("密码更新失败");
    }

    public ServerResponse<User> updateInformation(User user){
        int resultCount = userMapper.checkEmailByUserId(user.getEmail(),user.getId());
        if (resultCount > 0){
            return ServerResponse.createByErrorMessage("Email已经存在");
        }
        User updateUser = new User();
        updateUser.setId(user.getId());
        updateUser.setEmail(user.getEmail());
        updateUser.setPhone(user.getPhone());
        updateUser.setQuestion(user.getQuestion());
        updateUser.setAnswer(user.getAnswer());

        int updateCount = userMapper.updateByPrimaryKeySelective(updateUser);
        if (updateCount > 0){
            return ServerResponse.createBySuccess("更新个人信息成功",updateUser);
        }
        return ServerResponse.createByErrorMessage("更新个人信息失败");
    }

    @Override
    public ServerResponse<User> getUserInformation(Integer userId){
        User user = userMapper.selectByPrimaryKey(userId);
        if (user == null){
            return ServerResponse.createByErrorMessage("找不到当前用户");
        }
        user.setPassword(StringUtils.EMPTY);
        return ServerResponse.createBySuccess(user);
    }

    @Override
    public ServerResponse cheukAdminRole(User user){
        if (user != null && user.getRole().intValue() == Const.Role.ROLE_ADMIN){
            return ServerResponse.createBySuccess();
        }
        return ServerResponse.createByError();
    }


}














